How to define environment variable in create-react-app?

main Image

Environment Variable works differently in create-react-app. To access the environment variable in your app, you have to add the prefix REACT_APP_ before defining your variable as described in the below image.


In our app, you can access this variable as a process.env variable.

let BACKENDURL = process.env.REACT_APP_BACKENDURL || "http://localhost:8080";

You can define the environment variable in the .env file. If you are hosting your app in production like Netlify or Heroku, you can define varibles in their dashboard.

Thanks for reading the post.

If you want to learn how to build a full-stack subscription website, please check out my course.

If you find this post useful, please share it on your social platform to reach out to more people.

Share this Blog